You're mixing up two very different things here, gamblingbad.
One thing is me calling something you said (a message, one sentence) racist. That is what happened. You made a statement which I consider to be racist.
A whole different thing would be me calling you (as a person) a racist. I do not think you are a racist and I wouldn't call you one. Frankly, I don't even know you good enough to call you anything.
If you mistook me calling that message racist as me calling you racist, I'm sorry. That wasn't my intention.
People can say things that are racist without automatically being a racist. Sometimes people say racist things without having any bad intentions.
That's not limited to you, btw. I catch myself in these situations from time to time, and regret what I've said shortly after.